Boiler



BoILER Filed Dec. 1d, 1942 4 sheets-sheet 1 Oct. 10, 1944. J. cooK2,359,827

BoILER Filed Deo. l0, 1942 4 Sheets-Sheet 2 Patented Oct. 10, 1944 murenSTATES PATENT OFFICE Application December 10, 1942, Serial No. 468,601

Claims.

My invention relates to a boiler.

One of the objects of my invention is to provide a boiler heating systemwherein a rapid circulation of comparatively clean water is assuredthrough the boiler and accessories, and wherein impurities in the waterwill be trapped prior to circulating through the system.

Another object of my invention is to provide means whereby cold water asa source of supply is fed to the boiler and enters a settling tank orchamber before being delivered into the boiler proper, so that the coldwater entering the settling tank or chamber will immediately contact thehot water circulating through the system and cause separation of foreignmatter and the settling of such matter to the bottom of the settlingtank or chamber.

A further object of my invention is to provide a boiler system whereinrapid circulation of water through the system will keep the boiler cleanand will generate steam much quickerthan has heretofore been possible.

A still further object of my invention is to pro` vide, in a boilersystem, a settling-tank or chamber and to so connect the tank or chamberwith` the boiler proper that a rapid circulation of Water caused therebywill minimize the tendency of foreign matter or impurities to lodgeagainst the walls of the boiler proper; this being accomplished bydelivering cold water into the settlingtank or chamber at a medialpoint, taking the water from the tank or chamber at least in part atsubstantially the same level and feed the same to low points of thewater-chamber or chambers of the boiler and returning the water from ahigh point of the water-chamber or high points of the variouswater-chambers of the boiler to a high point of the settling-tank orchamber.'

A still further object of my invention is to include in my improvedboiler system, waterchambers at opposite sides of the combustionchamber,to provide spaced-apart legs on the boiler element so that they aredisposed at the front and rearA of the combustion-chamber, to providewater-jackets which serve as side walls of the boiler-furnace and whichare spaced in relation to said water-chambers to providefuelcompartments which feed the fuel intothe com` bustion-chamberunderneath said Water-chambers, to provide said chambers and jacketswith water-inlets to receive water from a settling-tank receiving theinitial supply of Water to the system, and to connect high points ofsaid vwaterchambers and water-'jackets with high points of the boilerproper and also connectY a high point of said boiler proper with a highpoint of the settling-chamber; thus assuring a rapid circulation ofwater through the boiler system and separation of impurities in thewater within the .1 settling-chamber at the point of admixture oi thecold water fed to said settling-chamber with the hotter watercirculating through said chamber and through the variouswater-containing elements of the boiler-furnace.

It is-well known that water from different sourcesivary in impuritiesand that some Waters have more sediment than others, such as magnesium,which when heated turns into a chalky substance and adheres to the wallsof waterchambers and pipes and clogs up such parts,

somewhat similar tolime. Impurities of this kind will in myimproved'boiler system, due to the particular point of entrance of thewater from its source into the system'and to the connections madebetween the various parts of the system, separate from the'circulatingwater in the system and'settle ata low point, where it can be easilyblown oi and assurance had of comparatively clean' water` circulatingthrough the system.

With the above and` other objects to appear hereinafter my inventionconsistsin the' novel features of construction, in' the arrangement andcombination of parts and in the manner of connecting such parts, all aswill be hereinafter described and more particularly pointed out in theappended claims.

In the drawings Fig. 1 is a combination View, showing one-half of myimproved 'boiler system in front eleva'-V Fig. 6 is a horizontal sectiontaken on line` 6 6, Fig. 1. Y

Nowv referring tothe drawings in detail, the reference numeral 6designates the boiler-furnace which may be used for the generation ofsteam for power or heating purposes, or for the circulation of water ina water-heating system, as will be explained hereinafter.

This boiler-furnace comprises a boiler proper,

designated 1. which may vary in form and con- I struction, but as shownin the drawings comprises a cylindrical vertical tubular boiler 8 havingas a part thereof two depending water legs 9 and I 9 which are parallelto each other and spaced-apart, as best shown in Fig. 2. The cylindricalportion of said boiler has a bottom-wall I I and a top-wall I2 andspaced from said top-wall an intervening-wall I3 which serves as the topof the water or steam space of the boiler, Heatflues I4 connect saidbottom-wall II with the wall I3. The lower ends of these flues open intothe space between the parallel depending legs 9 and Ill, while the upperends thereof open into the space between the intervening-wall I3 and thetop-wall I2, said last-mentioned space serv- Y ing as the smoke-box forthe boiler and having a smoke-pipe I5 extending laterally therefrom forconnection with a chimney.

The water-space in the boiler is continuous from the bottom of theparallel dependinglegs 9 and I0 to the intervening-wall I3, which may beconsidered the actual upper end of the boiler proper, since thesmoke-box may be built onto the upper end of the boiler, although not soshown.

The front water leg 9 is provided with a dooropening I6 and this openingleads to the Vspace between said leg and the rear leg Ill, which spaceserves as a combustion-chamben'as will be 'explained hereinafter. Thewater legs 9 and Ill have extensions which are continued downwardly as asingle thickness of metal and serve as walls to support the boiler fromthe floor on which the boiler system rests. In this manner a space, suchas I1, is provided at the bottom of the boiler having said extensionsserving as front and rear walls, designated I8 and I9. This space isclosed at the sides by walls and 2l and the space so confined betweenwalls I8, I9, 20 and 2| is to be divided to serve as ash-pits, as willappear hereinafter.

serves as a bridge-wall connecting the two parallel depending water legs9 and I0 at the front Y and rear of the boiler-furnace and directlybethough in the drawings I have shown only one" side ash-compartment, itis apparent that a simii lar compartment is provided at the oppositeside of the boiler-furnace.

28 designates water-chambers which serve as sides for thecombustion-chamber 22 and outside of these water-chambers, fuel-chambers29 are provided; these being arranged between the water-chambers 28 andwater-jackets 30 which serve as continuations of the side walls 20 and2I Inwardly inclined rocking grates 3| eXtend from the lower ends of thewater-jackets 30 to the upper ends of the vertical-walls 24 and 25 andthe inner ends of these grates are supported 'onshelves or ledges 32extending outwardly from said walls. 1

From the foregoing it will be apparent, that ing into the open, as at34.

. f 45. 'Ihe bottom-wall I I of the tubular-boiler proper the bottom orbridge-wall I I of the tubular boiler 8 serves as the top-wall of thecombustionchamber, the depending water legs 9 and I0 as the front andrear walls thereof and the Waterchambers 28 as the side walls, and it isto be noted that the lower ends of the water-chambers are spaced fromthe grates 23 and 3I to provide fuel-feeding throats 33 leading to thelower end of the combustion-chamber.

It is also to be noted that the water-chambers are directed upwardly andoutwardly from their lower ends and have their upward ends extend- Thewater-jackets 3D are also inclined upwardly and outwardly, but at alesser angle than the water-chambers so that the fuel-chambers aregradually increased in width downwardly toward the .rocking grates 3 I,which serve as the bottoms of said fuel-chambers; thus preventingpacking of the fuel within the chambers. By reason of the rocking grates3| being inclined downwardly and inwardly, the fuel automaticallygravitates toward the center of the boiler-furnace so that the twosupplies of fuel at opposite sides of the boiler-furnace gravitatetoward the center of the combustion-chamber by passing through the feedthroats 33, such movement of the fuel being accelerated when rocking thegrates 3|. Such action of the grates also serves to free the fuel of anyashes on said grates due to the fact that burning of the fuel at thelower ends ofthe fuel-chambers takes place at times. Y

By suitable rocking mechanism. such as generally designated by thenumeral 35, the grate 23 can be rocked or shaken when required and eachof the rocking grates 3l is also provided with mechanism 3B for rockingthe same. Ashes from the side grates 3| enter the sideash-compartments-26 and ashes from the intermediate grate 23 aredelivered into the intermediate ash-compartment 21.

Air-inlet tubes 31 extend through the waterjackets and these tubes areclosed at their inner ends andv provided with openings 38, as best shownin Fig. 2. Their outer ends have dampers 39 applied thereto forregulating the supply of air therethrough or for entirely shutting offthe supply of air, as may be desirable. When large size coal is used thetubes may be open at both ends, as shown in Fig. 6.

The boiler-furnace thus far described is one especially adapted for usein connection with other features of my invention and is believed topossess advantages not inherent in other boilerfurnaces when associatedwith the other features in my invention to be presently referred to. Itis also to be understood that such other features of my invention may beassociated with different types of boilers, with the assurance thatadvantages will be derived therefrom not inherentl in any other boilerheating system.

I associate with my improved boiler-furnace, or any otherboiler-furnace, a settling-chamber which may be supported in anysuitable manner and which is of a comparatively large water capacity. Amedial point of this settling-chamber is connected with the lower endsof the waterchambers 28 by water-feed pipes 4 I. Connection is also madebetween the upper and lower ends of the settling-'chamber 40 andthewater-jackets 3U by water-feed pipes 42; and connection is :made betweensaid settling-chamber and the lower end of the boiler proper, preferablywith the lower end of the water leg I 0, by a water-feed pipe 43.

Connection is furthermore made between the upper ends. of thewater-chambers 28 and a comparatively high point of the boiler,preferably with the tubular boiler portion 8, by water-circulating pipes44 and these water-circulating pipes have connection between their ends,as at 45, with the upper ends of the water-jackets 30 bywater-circulating pipes 4B. The boiler is also connected with the upperend of the settlingchamber by a hot-water return pipe 41 which iscomparatively large so that it will have a capacity equaling theaggregate capacity of the several water-feed and water-circulating pipesabove referred to and thus assure a rapid cir- ,culatiion of waterthrough the boiler heating system.

In the drawings I have shown the level of th water within the boiler adistance below thewall I3 thereof, as indicated at 48, so as to providea steam space 49 above the water. A steamdelivery pipe 58 is connectedto the boiler so as to receive steam from this steam space, to beutilized for heating, or power purposes.

A water-supply pipe 5l for the heating system is connected with thesettling-chamber 40 a distance from its lower end and in the drawings Ihave shown connected to this water-supply pipe a return water pipe 52which, however, is not used when utilizing the boiler-furnace as a steamgenerator. It is, however, to be understood that this system can beemployed for hot-water heating purposes in which case the entire boilerand its water connections would be filled with water and thesteam-delivery pipe 50 would be utilized as a water-delivery pipe,supplying hot water to various radiators in a heating system or otherobjects utilizing hot water, from which the water so utilized isreturned to the settling-chamber 48 through the return-water pipe 52which would always be used in a hot-water heating system and would beomitted, plugged up, or shut-olf when utilizing the system as a steamgene-rating system. In any event, it vnll be found necessary to supplyadditional water to the heating system, whether used as asteam-generating system or a hot-water heating system and in all casesthe water-supply or delivery to the settling-chamber is at aconsiderably lower temperature than the water circulating within thesystem.

When using the system for generating steam, water supplied theretothrough the water-supply pipe 5I will be at a. much lower temperaturethan the water circulating through the system and, of course, whenutilizing the system as a waterheating system,`the water returnedthrough the return-water pipe 52 will be comparatively cool as it entersthe settling-chamber, especially so when additional cold watercommingles with the return or circulating water under automatic control,as will be understood by those familiar with the art to which thisinvention relates.

When using the system as a steam-generating system, the hot Water withinthe boiler passes downwardly into the upper end of the settlingchamberand from the latter passes through the water-feed pipes 4|, 42 and 43into the various segregated chambers .or water-containing portions ofthe boiler-furnace, rising upwardly from the depending legs 9 and I8into the cylindrical boiler portion 8 and rising also from the lowerends of the water-chambers 28 through the circulating pipes 44 connectedto the upper ends of said chambers and from the upper ends of thewater-jackets 38 through the water-circulating pipes 46 and 44 into theboiler proper, from which it again passes downwardly through thesettlingchamber. In cases where my system is employed as a steamgenerating system, cold water necessarily is added to the water withinthe system through the vwater-supply pipe 5| and as this cold watercomes in contact with the hot water circulating through the system, itimmediately causes all the foreign matter within the water to settle tothe bottom of the settling-chamber 48, where a blow-off pipe 53 isconnected therewith, and at intervals this foreign matter is blown outof the system. v

The rapid'circulation of the water assured by this system eliminates-thepossibility of any foreign substances that may not have settled to thebottom of the settling-chamber from adhering to the walls of thewater-,containing parts of the system, with the result that any suchforeign substances failing to immediately settle to the bottom of thejsettling-chamber will, as they reach the point at which the water-supplypipe 5I enters the settling-chamber, become separated from the`circulating water and then settle to the bottom of said chamber. It is,of course, understood that the products of combustion come in contactwith the front and rear legs of the boiler proper and also in Contactwith the water-chambers, and that a certainV degree of heat from theburning fuel is also transferred to the water within the water-jacketsat the sides of the boilerfurnace. This rapid circulation of the waterthrough the boiler aids in keeping the boiler clean and will generatesteam much quicker, and this is materially aided by delivering eXtracooler or cold water into a settling-chamber a suitable distance fromits bottom and delivering the water from said settling-chamber into theboiler from approximately the same level, at least in part, as thefeeding of waterinto the settling-chamber, and then returning it fromtheboiler at a high point of the settling-chamber. -The delivery of thecold water into the settling-chamber and the bringing of such water intocontact with the hot water in circulation causes immediate separation ofa major portion of foreign matter in the entering cold water and alsoany foreign matter in the circulating hot water. All such foreign matterwill gravitate tothe bottom of the settlingchamber to be blown off inthe usual manner,

e .A when desired. 50;`

'Ihe connection medially to the settling chamber 40 of the water-supplypipe 5l from the source of water supply' and the water-feed pipe' 43leading Vfrom said settling chamber to a low point of the water withinthe boiler proper, eliminates all interior walls and other parts orobjects usually employed in vsettling chambers or other elements servingsubstantially the purpose of settling chambers. This, therefore,simplifies the construction of the settling chamber, reduces the cost ofsame, and assures an effective action in separating foreign matter fromthe water before entering the boiler.

Having thus described my invention what IV claim is:

1. The combination of a boiler having a tubular upper portion throughthe tubes in which the products of combustion may pass.and from thelower end of which two spaced-apart depending water legs are arrangedserving as the front and rear of the combustion-chamber, water-chambersserving as the sides of the combustion-chamber and extending from frontwater leg to rear water leg, a settling-chamber, a pipe connecting thetubular portion of said boiler with the upper end of saidsettling-chamber, pipes connecting said settling-chamber with the lowerends of said water-chambers, a pipe connecting said settlingchamber withthe lower end of one of said water legs, pipes connecting the upper endsof said water-chambers vwith the tubular portion' of said boiler, a pipeconnected to said settling-chamber a distance from its lower end to feedwater to said settling-chamber at a lower temperature than the watercirculating therethrough by reason of its connection with said boilerand waterchambers, the cooler water entering said settlingchamber andcoming in Contact with thefhot water in circulation and at` such pointof contact causing separation of foreign matter by the commingling ofwater and gravitation of such matter to the bottom of saidsettling-tank.

2. The combination of a boiler having a cylindrical tubular upperportion and spaced-apart depending water legs at its lower portion,waterchambers extendingfrom one of said water legs to the other andspaced apart to form a combustion-chamber therebetween, a grate at thelower Aend of said combustion-chamber, water-jackets exterior of andspaced from said Water-chambers to provide side fuel-chambers,' gratesat the bottom of said fuel-chambers, all mentioned grates being spacedfrom the'bottoms of said. waterchambers to permit the pasage of fuelfrom said fuel-chambers to said first-mentioned grate, asettling-chamber spaced from said boiler, a water-supply pipe connectedtoxsaid settling-chamber for the admission of cold water thereto at apoint a distance'from its bottom, connection between at least one ofsaid water legs and said settling-chamber at approximately the level ofsaid water-supply pipe, pipes connecting low points ofsaid'water-chambers with said settlingchamber, p-ipes connecting saidsettling-chamber with the lower ends of saidwater-jackets, connectionbetween the upper ends of said waterchamber's and the tubular upperportion of said boiler, connection between the upper ends of saidwater-jackets with the tubular upper portion of said boiler, and a pipeconnecting the ltubular upper portion of said boiler with the upper endof said settling-chamber andhaving a capacity approximatelythat of allpipes leading from said settling-chamber to said boiler, water-chambersand water-jackets.

3. The combination of a boiler provided with a re box Vand segregatedwater-spaces surrounding said re box and in circulating connection withthe water in the upper portion of said boiler,

a settling-chamber having a supply-pipe connected thereto a distancefrom its lower end for the admission of water at a lower temperaturethan the water in said boiler, a blow-oli pipe at the lower end of saidsettling-chamber, pipes connecting said settling-chamber atapproximately the level of said supply-pipe with low points of thesegregated water-spaces of said boiler, and

a pipe of at least the capacity of said connecting pipes connecting ahigh point of said boiler with the upper end of said settling-chamber.

4. The combination of a boiler having a tubular upper portion withspaced-apart water legs depending 'from the lower end of said tubularportion at the front and rear thereof and between which legs acombustion chamber and water spaces are arranged, a settling chamberhaving connection at its upper end with the tubular' portion of saidboiler, connection at a comparatively Alow point of said settlingchamber with the lower end of at least one of said depending legs,connection between said settling chamber and low points of said waterspaces, connection between high points of Said water spaces and thetubular portion of said boiler, said tubular portion, water spaces,settling chamber and connections providing means for circulating thewater through the boiler and settling chamber, and a pipe connected tosaid settling chamber for admission of cooler water than thewaterincirculation, said pipe entering said settling chamber a distanceabove the bottom thereof and serving to bring the cooler water incontact with the hot water in circulation to cause separation of foreignmatter and to cause the same to gravitate to the bottom of said settlingchamber.

5. The combination of a boiler having a cylindrical tubular upperportion and spaced apart depending water legs at its lower portion,water chambers extending from one of said water legs to the otherV andbeing spaced apart to form a combustion chamber therebetween, a grate atthe lower end of said combustion chamber, a settling chamber spaced fromsaid boiler, a water supply pipe connected to said settling chamber forthe admission of cold water thereto at a point a'distance from itsbottom, connection between at least one of said water legs and saidsettling all pipes leading from said settling chamber to said boiler.

Y JOHN COOK. l

